%0 Journal Article
%A Pech, Pavel
%T A sharpening of a discrete analog of Wirtinger's and isoperimetric inequalities
%J Mathematica Bohemica
%D 1992
%P 425-428
%V 117
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.21136/MB.1992.126056/
%R 10.21136/MB.1992.126056
%G en
%F 10_21136_MB_1992_126056